What is the holding tank defined as?

• A. A device used to store clean water for flushing
• B. A watertight receptacle for the collection and holding of wastewater
• C. A device for aerating wastewater
• D. A simple open-top container for liquids

Answer: (B)

A holding tank is a watertight receptacle designed to store wastewater on-site until it can be pumped out or disposed of. The key point is that it only stores wastewater and keeps it contained, preventing leaks or contamination. That’s why the best description is a watertight receptacle for the collection and holding of wastewater. The other options describe storing clean water, treating or aerating wastewater, or an open, non-watertight container, which don’t match the function of a holding tank.